Bit banging Bit banging is a technique for serial communications using software instead of dedicated hardware. Software directly sets and samples the state of pins on the microcontroller, and is responsible for all parameters of the signal: timing, l…

My father got me a computer for graduation with 512MB RAM and a Pentium processor. It came with Windows XP, and I used it to do 2D animation with Adobe Flash. Back in those days, I was looking for my dream job as a 3D artist, and I'd often see job li…

The Knuth-Morris-Pratt Algorithm in my own words For the past few days, I’ve been reading various explanations of the Knuth-Morris-Pratt string searching algorithms. For some reason, none of the explanations were doing it for me. I kept banging my he…

这是六个人的故事,从不服输而又有强烈控制欲的monica,未经世事的千金大小姐rachel,正直又专情的ross,幽默风趣的chandle,古怪迷人的phoebe,花心天真的joey——六个好友之间的情路坎坷,事业成败和生活中的喜怒哀乐,无时无刻不牵动着彼此的心,而正是正平凡的点点滴滴,却成为最令人感动与留恋的东西. 人物:1.瑞秋•格林(RACHEL GREENE)由珍妮佛•安妮斯顿(Jennifer Aniston)扮演 瑞秋是莫妮卡的高中同学,在与牙医未婚夫的婚礼上脱逃至莫妮卡处. 2.罗…

Problem H. ICPC QuestTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100500/attachments Description Coach Fegla has invented a song effectiveness measurement methodology. This methodology in simple English means count the frequ…

I2C只用两条线(SDA和SCL)在连接到总线上的设备之间传送数据.每一个设备都由唯一的地址来识别(不管是微处理器.LCD驱动器.存储器或者键盘接口),并且可以依照设备的功能作为发送器或者接收器使用.LCD驱动器可能只是个接收器,而存储器可以发送和接受数据.除了发送器和接收器,当传送数据时设备还可以作为主机或者从机.主机就是初始化数据传输和产生时钟信号的设备,在那个时刻,任何被寻址的设备都是从机.        I2C总线是一个多主机总线.意味着可以连接多个可以控制总线的设备到总线上.主机通常是…

The courtyard rang to the song of swords. Under black wool, boiled leather, and mail, sweat trickled icily down Jon’s chest as he pressed the attack. Grenn stumbled backward, defending himself clumsily. When he raised his sword, Jon went underneath i…

XML-WSDL基础知识 WSDL 1.1. WSDL 简介 1.1.1.    概述 WSDL 指网络服务描述语言 (Web Services Description Language) WSDL 是基于 XML 的用于描述 Web Services 以及如何访问 Web Services 的语言. 做为通讯协议,在web通讯中消息的格式被标准化的.WSDL为描述网络服务定义XML语法使交互的端点之间拥有信息交互的能力.WSDL服务定义为分布式系统提供了证据并且担任自动参与在应用通讯中处理的方…

首先强调背景: 1.GIL是什么?GIL的全称是Global Interpreter Lock(全局解释器锁),来源是python设计之初的考虑,为了数据安全所做的决定. 2.每个CPU在同一时间只能执行一个线程(在单核CPU下的多线程其实都只是并发,不是并行,并发和并行从宏观上来讲都是同时处理多路请求的概念.但并发和并行又有区别,并行是指两个或者多个事件在同一时刻发生:而并发是指两个或多个事件在同一时间间隔内发生.) 在Python多线程下,每个线程的执行方式:1.获取GIL2.执行代码直到s…

Champions have the courage to keep turning the pages because they know a better chapter lies ahead. 冠军有不断翻页的勇气,因为他们知道下一个章节会更好. There is an effect of acceleration for those winners, simply speaking, without a few exceptions, it is a case of winner tak…